I've installed Gentoo a few times and everytime I've installed it I have had major lag and X server crashes when trying to copy files to other locations. Why is it doing this? Is It fixable.

The problem never has happened with any other distro. My hardware includes a Coppermine Celeron 800 mhz, 272 megs of ram, Ati Rage 128 32 meg AGP video card. My system was running KDE when all these problems occured.